I guess if I do try it myself I might do it for the announced upcoming Grand Theft Auto San Andreas for iOS, Android and Windows Phone next month - which is tommorow. Not sure when the release date is, but there should be some more info on this new updated graphics mobile version next week or so.
Even when San Andreas mobile comes out and this is released too I will continue to play Vice City just for the old, Back to the Future experience on my new iPad. (You don't need to jailbreak to install custom iPA's or mod iPA's just use Zeusmos.com).
Can't wait. I hope he releases this on Christmas Day or something. In the mean time I guess I'll look at doing this with a mate ourselves.